using System;

using iTextSharp.text;

/*
 * $Id: ExtendedColor.cs 106 2009-12-07 12:23:50Z psoares33 $
 * 
 *
 * This file is part of the iText project.
 * Copyright (c) 1998-2009 1T3XT BVBA
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * you must retain the producer line in every PDF that is created or manipulated
 * using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */

namespace iTextSharp.text.pdf {

    /**
     *
     * @author  Paulo Soares
     */
    public abstract class ExtendedColor : BaseColor {
    
        internal const int TYPE_RGB = 0;
        internal const int TYPE_GRAY = 1;
        internal const int TYPE_CMYK = 2;
        internal const int TYPE_SEPARATION = 3;
        internal const int TYPE_PATTERN = 4;
        internal const int TYPE_SHADING = 5;
    
        protected int type;

        public ExtendedColor(int type) : base(0, 0, 0) {
            this.type = type;
        }
    
        public ExtendedColor(int type, float red, float green, float blue) : base(Normalize(red), Normalize(green), Normalize(blue)) {
            this.type = type;
        }
    
        /**
        * Constructs an extended color of a certain type and a certain color.
        * @param type
        * @param red
        * @param green
        * @param blue
        * @param alpha
        */
        public ExtendedColor(int type, int red, int green, int blue, int alpha) : base(Normalize((float)red / 0xFF), Normalize((float)green / 0xFF), Normalize((float)blue / 0xFF), Normalize((float)alpha / 0xFF)) {
		    this.type = type;
	    }

        public int Type {
            get {
                return type;
            }
        }
    
        public static int GetType(object color) {
            if (color is ExtendedColor)
                return ((ExtendedColor)color).Type;
            return TYPE_RGB;
        }

        internal static float Normalize(float value) {
            if (value < 0)
                return 0;
            if (value > 1)
                return 1;
            return (float)value;
        }
    }
}
